Pattern cam selecting arrangement



March 18, 1969 SUSUMU HANYU 3,433,092

PATTERN CAM SELECTING ARRANGEMENT Filed Oct. 18, 1966 Sheet 1 of sINVENTOR. M W

flqdaa/ 7/049- March 13, 1969 SUSUMU HANYU 3,433,092

PATTERN CAM SELECTING ARRANGEMENT Filed Oct. 18, 1966 Sheet 2 of 3INVENTOR.

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PATTERN CAM SELECTING ARRANGEMENT F'iled Oct. 18, 1966 Sheet 3 of 5INVENTOR.

United States Patent Oflice 3,433,092 Patented Mar. 18, 1969 3,433,092PATTERN CAM SELECTING ARRANGEMENT Susumn Hanyu, Tokyo, Japan, assignorto Janome Sewing Machine Co., Ltd., Tokyo, Japan Filed Oct. 18, 1966,Ser. No. 587,493 Claims priority, application Japan, Oct. 20, 1965,

40/ 63,922 US. Cl. 74568 Int. Cl. F16h 53/00 19 Claims ABSTRACT OF THEDISCLOSURE The present invention relates to a pattern cam selectingarrangement, and more particularly to an arrangement for selecting thepattern cams of a zig-zag sewing machine in order to obtain differentornamental stitch patterns.

In known Zig-zag sewing mechines, pattern cams are coaxially arranged ina stack, and each cam is associated with a cam follower, each of whichcan be selectively moved between an inoperative position and anoperative position cooperating with the respective cam for transmittingoscillatory motion to the needle bar assembly.

In other known pattern cam selecting arrangements for sewing machines, asingle cam follower is placed in engagement with any selected patterncam. The latter construction has the advantage that only one camfollower is required, however, it is difiicult to move the cam followersin axial direction from one pattern cam to another, since the ditferentpositions of the peaks and valleys of adjacent pattern cams block axialmovement of the cam follower.

The pattern cam selecting arrangements according to the prior artrequire a very complicated selector mechanism, and it is one object ofthe invention to overcome this disadvantage of prior art constructions,and to provide a pattern cam selecting arrangement, particularly forsewing machines, of very simple construction which reliably andaccurately operates.

Another object of the invention is to provide a pattern cam selectingarrangement in which a single cam follower is first moved to a positionspaced from the pattern cams and then moved into engagement with aselected pattern cam.

Another object of the invention is to provide a pattern cam selectingarrangement with a single movable and turnable knob which, upondepression causes retraction of a single cam follower, and upon rotationcauses the single cam follower to move to a position opposite a selectedpattern cam.

Another object of the invention is to provide a pattern selectingarrangement in which the selection of a pattern cam can be effected byone finger of the operator.

Another object of the invention is to provide a pattern cam selectingarrangement having a single cam follower, with means for indicating theposition of the cam follower and the pattern of the selected cam.

With these objects in view, the present invention relates to an improvedpattern cam selecting arrangement which is particularly suitable for azig-zag sewing machine.

One embodiment of the invention comprises a set of rotary pattern cams;first and second threadedly engaged selector means, for example, aspindle and nut arrangement, the first selector means being axiallymovable and the second selector means being rotatable; a cam followermounted on the first selecetor means for movement with the same in axialdirection, and also for movement toward and away from said pattern cams;means biassing the cam follower toward the pattern cams, and preferablybeing part of output means connected with the cam follower; and manualoperating means including first control means for moving the camfollower from an operative position engaging one of the pattern cams toa corresponding retracted position, and second rotary control meansincluding a manually operated knob coupled by the manual operation withthe second selector means so that the same can be manually turned.

Due to the threaded engagement between the first and second selectormeans, the first selector means moves axially when the second selectormeans is rotated, and places the cam follower while the same isretracted by the action of the first control means from the respectivepattern cam, in another position located opposite another pattern cam.When the manual operating means is released, the cam follower moves intoengagement with the respective selected pattern cam, and is oscillatedby the cam track pattern of the same.

In the preferred embodiment of the invention, the first control meansincludes an axially extending member along which the cam followerslides, and a knurled disc or knob which is depressed by one finger ofthe operator to retract the cam follower and to be coupled and rotatewith a screw spindle constituting the second selector means. Anindicator pointer is secured to the first selector means and moves inaxial direction with the cam follower to indicate on a suitable indiciaplate the pattern selected in the respective axially displaced positionof the cam follower.

The novel features which are considered as characteristic for theinvention are set forth in particular in the appended claims. Theinvention itself, however, both as to its construction and its method ofoperation, together with additional objects and advantages thereof, willbe best understood from the following description of specificembodiments when read in connection with the accompanying drawings, inwhich:

FIG. 1 is a front view illustrating a sewing machine, with the casingpartly broken off to show a pattern cam selecting arrangement accordingto the invention;

FIG. 2 is a fragmentary perspective view illustrating an embodiment ofthe invention;

FIG. 3 is a cross-sectional view taken on line III in FIG. 1; and

FIG. 4 is a fragmentary perspective exploded view illustrating a detail.

Referring now to the drawings, and more particularly to FIG. 2, a firstpart A of the apparatus serves for selecting the position of the camfollower 4, a second part D indicates the position of the cam follower,a third part B transmits the rocking movement of the cam follower to theneedle bar assembly, and a fourth part C is manually operated forcarrying out the selection.

Referring now to FIGS. 1 and 3, a sewing machine has a casing 20 closedby a top cover 19 and having an opening closed by a closure member 18which has an indicator plate 10 provided with symbols representingdifferent ornamental and zig-zag stitches with which pattern cams 1, 1a,1b are associated. Closure member 18 has a cutout 18a through which asegment of a cylindrical disc or knob 92 projects. Knob 92 has acircular peripheral serrated surface 96 with alternating grooves andridges, and which is dimensioned so as to be operated by one finger ofthe person using the sewing machine.

The sewing machine is provided in the usual manner with a needle barassembly 100 which is transversely oscillatable and biassed by a springinto a lateral position so that a connecting linkage 12, see FIG. 2, isresiliently pressed against the arm 7, as disclosed, for example, in theUS. Patent 3,208,417.

A main drive shaft 13, see FIG. 3, is connected by gears 15 and 16 andan intermediate shaft 21 to a gear 17 secured to a camshaft 2 on whichthe pattern cams 1, 1a, 1b are fixed in spaced positions by a key 22engaging a corresponding groove in a fixed sleeve 3. During rotation ofmain shaft 13, cam shaft 2 and the set of pattern cams thereon rotate.

A single cam follower 4 is shown in FIG. 2 in an operative positionengaging pattern cam 1 with an end portion 41.

A pair of support brackets 23 is mounted on a wall of casing 10 andprovided with bearings for mounting a rocking support shaft 8 whichpasses through a bore 42 in cam follower 4, see FIG. 4, so that the sameis supported for angular movement between the illustrated operativeposition, and an inoperative position retracted from the respectivepattern cam, as shown in chain lines in FIG. 3.

Bore 42 permits axial movement of cam follower 4 along rocking shaft 8.Such movement is accomplished by a shifting member which has a pair ofarms 5a and 5b with bores 52 through which rocking shaft 8 passes. Arms5a and 5b form a gap 51, as best seen in FIG. 4, in which cam follower 4is mounted for angular movement on the portion of shaft 8 passingthrough gap 51. Consequently, axial movement of shifting member 5 willaxially displace cam follower 4 along rocking shaft 8, while the camfollower is in all positions turnable about shaft 8.

Arm 5b has a threaded bore 57 into which a screw 24 is threaded forholding an angular pointer 11 secured to shifting means 5. The end ofpointer 11 is located opposite the indicia plate 10, and moves along thesame when shifting means 5 displaces cam follower 4 in axial directionto positions registering with different pattern cams 1, 1a., 1b.

The yoke portion of shifting means 5 is penetrated by a bore 53 in whicha spindle 6 is located. Spindle 6 has journal portions mounted inbearings of support bracket 23, and carries at the end thereof acoupling disc 62 whose cylindrical peripheral surface 66 is serrated andhas alternating axially extending ridges and grooves. As best seen inFIG. 1, the serrated peripheral surfaces 66 and 96 are located oppositeeach other and, as will be explained hereinafter in greater detail, canbe placed in meshing engagement so that by rotation of disc or knob 92,disc 62 can be rotated together with spindle 6.

Spindle 6 has a helical groove 61 engaged by a pin 54 which has athreaded portion engaging a threaded bore 55 in shifting means 5, asbest seen in FIGS. 3 and 4. The inner end of pin 54 projects into thehelical groove 61 of spindle 6 so that shifting means 5 is moved inaxial direction when spindle 6 is rotated. Since the axial displacementof shifting means 5 with cam follower 4 effects the selection of apattern cam, shifting means 5 constitutes a first selector means, andspindle 6 constitutes a second selector means, the selector means beingthreadedly engaged, and it will be appreciated that the term threadedlyis used in a broad sense to include conventional threads as well as thedisclosed pin and groove construction.

Rocking support shaft 8 carries two arms 82 fixed by screws 25. Amotion-transmitting shaft or rod 81 connects the end of arms 82 andpasses through an elongated opening or slot 43 in the radially outerportion of cam follower 4. Rocking shaft 8 has a portion projectingbeyond one of the brackets 23 and carrying fixed thereon an oscillatingarm 7 which is engaged by a rod 12 which is biassed by the spring of theneedle bar assembly to urge oscillating arm 7 downward.

Consequently, rocking shaft 8 with arms 82 and shaft 81 is biassed toturn in clockwise direction as viewed in FIG. 2, and in counterclockwisedirection as viewed in FIG. 3 for urging cam follower 4 toward a patterncam.

When pattern cam 1 is rotated in the position of FIG. 2, cam follower 4will rock on rocking shaft 8, and the rocking motion will be transmittedby the walls of slot 43 to motion transmitting shaft 81, and througharms 82 to shaft 8 so that the same rocks in synchronism with camfollower 4 and oscillates arm 7 which transmits the motion through linkarm 12 to the needle bar assembly which performs oscillationscorresponding to the pattern of cam 1 and makes a zig-zag or ornamentalstitch, as indicated by pointer 11 on indicia plate 10 in the positionof FIG. 2.

Since shaft 81 moves along a circular path, an elongated slot 43 isrequired. It will be seen that the motion transmitting means 82, 81transmit the rocking motion of carn follower 4 to the rocking shaft 8 sothat the same rocks in synchronism with cam follower 4 although thelatter is mounted for free axial sliding movement on rocking shaft 8.

Since the cam projections of an adjacent cam would prevent an axialmovement of cam follower 4 from one cam to the other in the illustratedoperative position, it is necessary to retract cam follower 4 to aninoperative position in which end portion 41 is spaced from the patterncams before cam follower 4 is shifted in axial direction.

Manual operating means are provided for this purpose. A frame 91includes two arms mounted on shaft 8 for turning movement and beingbiased to turn in clockwise direction as viewed in FIG. 2 by a spring 99coiled about shaft 8 and having arms respectively engaging a bracket 23and an arm 90. A control member or shaft 9 connects arms 90 and extendsacross an engaging portion 44 of cam follower 4 so that portion 44 movesalong shaft 9 during axial displacement of cam follower 4. Knob 92 withthe serrated peripheral cylindrical surface 96 is mounted on shaft 9 andis manually turnable about the axis of the same. As explained above, asegmentshaped portion of knob 92 projects out of a window 181: providedin the closure member 10 so as to be accessible to the operator, whilethe other parts of the mechanism, excluding the end portion of pointer11, are located within the casing 20, .19, 18.

Assuming that a selected zig-zag stitch has been made by the needle ofthe assembly 100 under the control of pattern cam 1, and that it isdesired to select another pattern cam for stitching a differentornamental stitch, the operator places one finger on the serratedsurface 96 of the projecting portion of knob 92, and presses the same inradial direction a small distance into the interior of the casing, thedistance being limited by an arcuate recess 18b in the closure member18. The finger pressure causes counterclockwise turning of frame 91against the action of spring 92 to a position in which control shaft 9first engages portion 44 of cam follower 4, and then turns the camfollower to the position shown in chain lines in FIG. 3 in which endportion 41 is spaced from the peripheral cam track of pattern cam 1.Irrespective of the axial position of cam follower 4, cam followerportion 44 Will be located opposite control shaft 9 since the sameextends parallel to shafts 8, 6 and 2. Consequently in all axialpositions of cant follower 4, irrespective of which pattern cam wasengaged by the cam follower, movement of control shaft 9 to an actuatedposition by pressure on knob 92 will effect retraction of the camfollower to a position in which the projecting cam track portions of thepattern cams will not obstruct axial movement of the cam follower.

When knob 92 is pushed in and turns with frame 91 about shaft 8, itmoves along a circular path into a position in which the cylindricalserrated surfaces 96, 66 engage each other and knob 92 is coupled withcoupling member 62. The friction produced between the serrated surfacesby the pressure of the finger of the operator on knob 92, is sufficientto frictionally couple knob 92 with coupling disc 62 so that if theoperator now turns knob 92 by applying with his finger a circumferentialforce, disc 62 is also turned together with spindle 61 whereby shiftingmeans moves in axial direction. Turning movement of shifting means 5 isnot possible since shaft 8 passes through aligned bores 52 in the arms5a, 5b of shifting means 5.

Shifting means 5, moving in axial direction of spindle 6 during manualturning of coupling knob 92, axially displaces cam follower 4 whichslides on shaft 8 in the above-described position spaced from thepattern cams. Pointer 11, secured to shifting means 5, moves with camfollower 4, and indicates its position on the indicia plate 10. When anindicia on plate indicates the desired and selected ornamental orzig-zag stitch pattern, cam follower 4 is located directly opposite andregistering with the pattern cam whose cam track is shaped in such apattern as to produce the desired stitch.

When a stitch and pattern cam has been selected in this manner, theoperator releases control knob 92 so that spring 99 turns frame 91 inclockwise direction as viewed in FIG. 2 until stopped by an abutmentmeans on support brackets 23 in the normal position of the manuallyoperated means in which the device is shown in FIGS. 2 and 3.

In this position, control shaft 9 is spaced from engaging portion 44 ofcam follower 4, and the serrated peripheral surfaces 96 and 66 ofcoupling discs 92 and 62 are again spaced from each other.

The biassing spring of the needle bar assembly, acting through arm 12 onoscillating arm 7 and urging shaft 8 with arms 82 and shaft 81 to turnin clockwise direction as viewed in FIG. 2, turns cam follower 4 to theoperative position engaging the respective selected pattern cam oppositewhich cam follower 4 is now located.

During rotation of shaft 2, the respective selected pattern cam rotateswith the other pattern cams, and rocks cam follower 4 a small angledetermined by the peaks and valleys of the cam track, and the rockingmotion of cam follower 4 is transmitted by motion transmitting shaft 81and arms 82 to shaft 8 which is rocked together with oscillating arm 7so that arm 12 is raised against the action of the needle bar assemblyspring when a peak of the cam track engages cam follower 4. The pressureof the needle bar assembly spring on arm 12 urges cam follower 4 to moveinto the valleys of the cam track. In this manner, an ornamental stitchcorresponding to the cam track pattern of the selected cam is produced.

From the above description of the structure and mode of operation of apreferred embodiment of the invention it will become apparent that theoutput means 12, 7, 82, 8 are rocked and oscillated by cam follower 4,and that the first control means 9 moves the cam follower to a positionspaced from the pattern cams, whereupon the second control means 92 ismanually coupled with the rotary selector means 6, 61, 62 for causingaxial displacement of the cam follower means by the axially displacedselector means 5. Indicating means 11 moves with cam follower 4 andselector means 5 to indicate the selected pattern cam and the ornamentalor zig-zag stitch associated with the same.

The alignment of the cam follower with a selected cam is indicated bythe indicating means 10, 11, but it is preferred to provide a number ofarresting recesses 63 in disc 62, cooperating with an arresting catch 64mounted in a stationary frame part of the machine and urged by a spring65 into engagement with the recesses 63. Only two diametrically arrangedarresting recesses 63 are shown since the helix angle of helical groove61 is designed to cause axial movement of shifting means 5 a distancecorresponding to the spacing between two adjacent pattern cams, whenspindle 6 turns 180 and arresting catch 64 snaps into the respectiveother arresting recess 63.

It will be understood that each of the elements described above, or twoor more together, may also find a useful application in other types ofpattern selecting arrangements differing from the types described above.

While the invention has been illustrated and described as embodied in apattern cam selecting arrangement for a sewing machine having a singledepressible and turnable knob for shifting a cam follower betweenpositions cooperating with difierent pattern cams, it is not intended tobe limited to the details shown, since various modifications andstructural changes may be made without departing in any way from thespirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist ofthe present invention that others can by applying current knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended to becomprehended Within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. Pattern cam selecting arrangement comprising, in combination, a setof rotary pattern cams having a common first axis; first and secondthreadedly engaged selector means, having a second axis parallel withsaid first axis, said first selector means being mounted for axialmovement on said second selector means, and said second selector meansbeing rotatable about said second axis; a cam follower cooperating withsaid pattern cams; mounting means supporting said cam follower for axialmovement with said first selector means between a plurality of axiallydisplaced retracted positions located opposite and spaced from saidpattern cams, respectively, and also for movement from each of saidretracted positions to a corresponding operative position engaging therespective pattern cam and being oscillated by the same; biassed outputmeans connected with said cam follower and being oscillated duringoscillation of the same; and manual operating means movable from aninoperative position to an actuated position, and including firstcontrol means for moving said ca-m follower from any one of saidoperative positions to the corresponding retracted position, said firstcontrol means including an elongated control member extending in axialdirection and across said cam follower in all positions of the same sothat upon movement of said manual operating means to said actuatedposition, said control member engages said cam follower in any operativeposition and moves the same to the corresponding inoperative position,and second rotary control means including a manually turnable knobdepressible to said actuated position for moving said control memberinto engagement with said cam follower, and engaging in said actuatedposition said second selector means for turning the same when said knobis turned by the operator whereby said first selector means is axiallymoved and places said cam follower in another selected position oppositea selected pattern cam which is engaged by said cam follower uponrelease of said manual operating means, said manual operating meansincluding means supporting said control member and said knob for angularmovement between said inoperative and actuated positions.

2. An arrangement according to claim 1 wherein said second selectorincludes a threaded spindle, and a disc having a serrated peripheralsurface and being secured to said spindle for rotation therewith;wherein said knob has a serrated peripheal suface frictionally engagingsaid serrated surface of said disc in said actuated position for turningthe latter with said spindle.

3. An arrangement according to claim 2 including an indicating pointersecured to said first selector means for axial movement with the sameand with said cam follower, and a stationary indicia plate having spacedindicia representing stitch patterns obtained by said pattern cams,respectively, said pointer registering with said indicia, respectively,when said cam follower is located opposite corresponding pattern cams,respectively.

4. An arrangement according to claim 1 wherein said mounting meansincludes a shaft supporting said cam follower for axial slidingmovement, for angular movement between said retracted positions and saidoperative positions, and also for oscillating movement in said operativeposition; and comprising motion transmitting means connecting said camfollower with said shaft so that the same rocks and oscillates with saidcam follower, said shaft being connected with said output means foroscillating the same.

5. An arrangement according to claim 4 wherein said motion transmittingmeans includes a pair of arms connected with said shaft for angularmovement with the same, and a motion-transmitting shaft connecting theends of said arms; and wherein said cam follower has an elongatedopening through which said motion-transmitting shaft passes wherebyangular displacement of said cam follower is transmitted through saidmotiontransmitting shaft and said arms to said first-mentioned shaft foroscillating the same and thereby said output means.

6. An arangement according to claim 4 wherein said manual operatingmeans include a frame mounted on said shaft for angular movement; andwherein said control member is a control shaft extending in axialdirection and crossing said cam follower in all positions of the same,wherein said knob has a circular serrated surface coaxial with saidcontrol shaft; and wherein said second selector means includes a dischaving a serrated peripheral circular surface located opposite saidfirst-mentioned serrated peripheral surface of said knob, and beingfrictionally engaged by the same in said actuated position of saidmanual opearting means, said control shaft engaging said cam followerduring movement to said actuated position for turning the same to one ofsaid inoperative positions so that manual turning of said knob causesaxial displacement of said cam follower in said inoperative position.

7. An arrangement according to claim 6 and including spring means forurging said control shaft and said control knob to an inoperativeposition in which said control knob is spaced from said disc so thatmanual pressure on said knob is required for moving said control shaftand said control knob to said actuated position.

8. An arrangement according to claim 7 and including resilient catchmeans for resiliently arresting said disc in angular positionscorresponding to axially displaced positions of said first selectormeans in which said cam follower is located opposite said pattern cams,respectively.

9. An arrangement according to claim 8 wherein said second selectormeans includes a spindle having a helical groove, and wherein said firstselector means has a cylindrical bore through which said spindle passes,and includes a pin projecting in radial direction into said helicalgroove so that upon turning movement of said spindle, said firstselector means is driven to move in axial direction.

10. An arrangement according to claim 9 wherein said first selectormeans has a pair of arms forming a gap in which said cam follower islocated, said arms having aligned bores through which said oscillatingshaft passes whereby said first selector means is prevented from turningmovement.

11. An arrangement according to claim 10 and including an indicatingpointer secured to said first selector means and moving in axialdirection with the same and with said cam follower, and an indicia platefor indicating the stitch patterns of the cam opposite which said camfollower is located.

12. An arrangement according to claim 11 including a closure platehaving a cutout through which a segmentshaped portion of said knobprojects so as to be adapted to be engaged by the finger of an operator;and wherein said indicia plate is secured to said closure plate.

13. An arrangement according to claim '12 wherein said closure plate hasan arcuate recess adjacent said segmentshaped portion of said knob forlimiting movement of the finger of the operator.

14. Cam selecting arrangement comprising, in combination, a set ofrotary cams having a common axis; a cam follower; mounting meanssupporting said cam follower for movement along said cams between aplurality of axially displaced positions located opposite said cams,respectively, spaced fro-m the same, and also for movement from each ofsaid retracted positions to a corresponding operative position engagingthe respective cam and being oscillated by the same about said firstaxis; biassing means for urging said cam follower to said operativepositions; selector means connected with said cam follower and includinga coupling member turnable about an axis parallel to said axis formoving said cam follower between said axially displaced positions;manually operated control means including an elongated control memberextending parallel to said axes across said cam follower in alldisplaced positions of the same, spring means urging said control memberaway from said cam follower, and a manually operable coupling knoblocated opposite said coupling member and being rotatable about an axisparallel to said axes; and means supporting said control means formovement in a direction perpendicular to said axes between aninoperative position, and an actuating position in which said controlmember holds said cam follower in said retracted position and saidcoupling knob is coupled with said coupling member for rotation togetherso that radial finger pressure on said knob in a direction trans verseto said axes separates said cam follower from said cams whereupon acircumferential finger force on said knob causing rotation of said knobmoves said cam follower to a selected position located opposite andspaced from a selected cam whereby upon release of said knob, saidspring means moves said control member to release said cam follower, andsaid biassing means moves said cam follower to an operative position.

15. Cam selecting arrangement as claimed in claim 14 wherein saidcoupling knob and said coupling member have serrated cylindricalperipheral surfaces which are in meshing engagement in said actuatingposition of said control means.

16. Cam selecting arrangement as claimed in claim 14 wherein saidcontrol member is a control shaft; and wherein said coupling knob ismounted on said control shaft for rotation.

17. Cam selecting arangement as claimed in claim 14 wherein saidmounting means include a support shaft mounting said cam follower foraxial movement and for rotation about an axis parallel with said axes;wherein said control means include a frame mounted on said support shaftfor angular movement and carrying said control member so that the samemoves between said inoperative and actuating positions when said frameis angularly displaced about said support shaft by pressure on saidknob.

18. Cam selecting arrangement as claimed in claim 17 wherein said camfollower has an elongated opening; and comprising motion transmittingmeans including a pair of arms connected with said support shaft forangular movement, and a motion transmitting rod connecting the ends ofsaid arms and passing through said opening whereby angular displacementof said cam follower in all axially displaced position by a cam istransmitted to said support shaft for oscillating the same; and anoutput member secured to said support shaft and being oscillated by thesame.

19. An arrangement according to claim 18 and comprising an indicatingpointer secured to said first selector 9 10 means for axial movementwith the same and with said 3,012,527 12/1961 Sternberlg. cam follower,and an indicia plate having indicia respec- 3,081,724 3/1963 Bono.tively representing different stitch patterns associated 3,208,417 9/1965 Eguchi et al. 74-483 with said pattern cams, respectively, saidpointer register- 3,35 3,509 11/ 196-7 Reeber et al 1l2158 ing with saidindicia, respectively, when said cam follower 5 is located oppositepattern cams, respectively, correlated FRED MATTERN, i ary Exammer.

with the indicia indicated by said pointer. F. SHOEMAKER, AssistantExaminer References Cited UNITED STATES PATENTS 2,971,482 2/1961 Koike.

US. Cl. X.R. 10 112158; 74-56 9; 200-61.6

